diff --git a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
index 255daf14..41e9adb8 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
@@ -770,20 +770,35 @@ class BaresipService: Service() {
                                     PendingIntent.FLAG_UPDATE_CURRENT)
                             val nb = NotificationCompat.Builder(this, HIGH_CHANNEL_ID)
                             nb.setSmallIcon(R.drawable.ic_stat)
-                                    .setColor(ContextCompat.getColor(this,
-                                            R.color.colorBaresip))
-                                    .setContentIntent(pi)
-                                    .setCategory(Notification.CATEGORY_CALL)
-                                    .setAutoCancel(true)
-                                    .setContentTitle(getString(R.string.missed_call_from))
-                                    .setContentText(caller)
+                                .setColor(ContextCompat.getColor(this, R.color.colorBaresip))
+                                .setContentIntent(pi)
+                                .setCategory(Notification.CATEGORY_CALL)
+                                .setAutoCancel(true)
+                            if (VERSION.SDK_INT < 23) {
+                                nb.setContentTitle(getString(R.string.missed_call_from))
+                                nb.setContentText(caller)
+                            } else {
+                                var missedCalls = 0
+                                for (notification in nm.activeNotifications)
+                                    if (notification.id == CALL_MISSED_NOTIFICATION_ID)
+                                        missedCalls++
+                                if (missedCalls == 0) {
+                                    nb.setContentTitle(getString(R.string.missed_call_from))
+                                    nb.setContentText(caller)
+                                } else {
+                                    nb.setContentTitle(getString(R.string.missed_calls))
+                                    nb.setContentText(
+                                        String.format(getString(R.string.missed_calls_count),
+                                            missedCalls + 1))
+                                }
+                            }
                             if (VERSION.SDK_INT < 26) {
                                 @Suppress("DEPRECATION")
                                 nb.setVibrate(LongArray(0))
                                         .setVisibility(NotificationCompat.VISIBILITY_PRIVATE)
                                         .priority = Notification.PRIORITY_HIGH
                             }
-                            nm.notify(CALL_NOTIFICATION_ID, nb.build())
+                            nm.notify(CALL_MISSED_NOTIFICATION_ID, nb.build())
                             return
                         }
                     }
@@ -1306,26 +1321,6 @@ class BaresipService: Service() {
 
     companion object {
 
-        const val STATUS_NOTIFICATION_ID = 101
-        const val CALL_NOTIFICATION_ID = 102
-        const val TRANSFER_NOTIFICATION_ID = 103
-        const val MESSAGE_NOTIFICATION_ID = 104
-
-        const val STATUS_REQ_CODE = 1
-        const val CALL_REQ_CODE = 2
-        const val ANSWER_REQ_CODE = 3
-        const val REJECT_REQ_CODE = 4
-        const val TRANSFER_REQ_CODE = 5
-        const val ACCEPT_REQ_CODE = 6
-        const val DENY_REQ_CODE = 7
-        const val MESSAGE_REQ_CODE = 8
-        const val REPLY_REQ_CODE = 9
-        const val SAVE_REQ_CODE = 10
-        const val DELETE_REQ_CODE = 11
-
-        const val DEFAULT_CHANNEL_ID = "com.tutpro.baresip.default"
-        const val HIGH_CHANNEL_ID = "com.tutpro.baresip.high"
-
         var isServiceRunning = false
         var isConfigInitialized = false
         var libraryLoaded = false
diff --git a/app/src/main/kotlin/com/tutpro/baresip/Constants.kt b/app/src/main/kotlin/com/tutpro/baresip/Constants.kt
index 67d12e1a..3577ebe3 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/Constants.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/Constants.kt
@@ -2,9 +2,30 @@ package com.tutpro.baresip
 
 const val TAG = "Baresip"
 
+const val DEFAULT_CHANNEL_ID = "com.tutpro.baresip.default"
+const val HIGH_CHANNEL_ID = "com.tutpro.baresip.high"
+
 const val BACKUP_PERMISSION_REQUEST_CODE = 1
 const val RESTORE_PERMISSION_REQUEST_CODE = 2
 const val RECORD_PERMISSION_REQUEST_CODE = 3
 const val CONTACTS_PERMISSION_REQUEST_CODE = 4
 const val READ_CERT_PERMISSION_CODE = 5
 const val READ_CA_PERMISSION_CODE = 6
+
+const val STATUS_NOTIFICATION_ID = 101
+const val CALL_NOTIFICATION_ID = 102
+const val CALL_MISSED_NOTIFICATION_ID = 103
+const val TRANSFER_NOTIFICATION_ID = 104
+const val MESSAGE_NOTIFICATION_ID = 105
+
+const val STATUS_REQ_CODE = 1
+const val CALL_REQ_CODE = 2
+const val ANSWER_REQ_CODE = 3
+const val REJECT_REQ_CODE = 4
+const val TRANSFER_REQ_CODE = 5
+const val ACCEPT_REQ_CODE = 6
+const val DENY_REQ_CODE = 7
+const val MESSAGE_REQ_CODE = 8
+const val REPLY_REQ_CODE = 9
+const val SAVE_REQ_CODE = 10
+const val DELETE_REQ_CODE = 11
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index 19ff89b5..66620a11 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -242,6 +242,8 @@
     <string name="reject">Hylkää</string>
     <string name="incoming_call_from">Puhelu soittajalta</string>
     <string name="missed_call_from">Vastaamaton puhelu soittajalta</string>
+    <string name="missed_calls">Vastaamattomia puheluita</string>
+    <string name="missed_calls_count">%1$d vastaamatonta puhelua</string>
     <string name="transfer_request_to">Puhelun siirtopyyntö kohteeseen</string>
     <string name="message_from">Viesti lähettäjältä</string>
     <!-- Boot Completed Receiver -->
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 5cb60ad2..3a0eada9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -220,6 +220,8 @@
     <string name="reject">Reject</string>
     <string name="incoming_call_from">Incoming call from</string>
     <string name="missed_call_from">Missed call from</string>
+    <string name="missed_calls">Missed calls</string>
+    <string name="missed_calls_count">%1$d missed calls</string>
     <string name="transfer_request_to">Call transfer request to</string>
     <string name="message_from">Message from</string>
     <!-- Boot Completed Receiver -->